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Geomechanics and Engineering Volume 8, Number 4, April 2015 , pages 523-540 DOI: https://doi.org/10.12989/gae.2015.8.4.523 |
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Seismic lateral earth pressure analysis of retaining walls |
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Muhannad Ismeik and Fathi Shaqour
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| Abstract | ||
| Based on limit equilibrium principles, this study presents a theoretical derivation of a new analytical formulation for estimating magnitude and lateral earth pressure distribution on a retaining wall subjected to seismic loads. The proposed solution accounts for failure wedge inclination, unit weight and friction angle of backfill soil, wall roughness, and horizontal and vertical seismic ground accelerations. The current analysis predicts a nonlinear lateral earth pressure variation along the wall with and without seismic loads. A parametric study is conducted to examine the influence of various parameters on lateral earth pressure distribution. Findings reveal that lateral earth pressure increases with the increase of horizontal ground acceleration while it decreases with the increase of vertical ground acceleration. Compared to classical theory, the position of resultant lateral earth force is located at a higher distance from wall base which in turn has a direct impact on wall stability and economy. A numerical example is presented to illustrate the computations of lateral earth pressure distribution based on the suggested analytical method. | ||
| Key Words | ||
| lateral earth pressure; limit equilibrium; seismic stability; retaining wall; theoretical analysis | ||
| Address | ||
| (1) Muhannad Ismeik: Department of Civil Engineering, The University of Jordan, Amman 11942, Jordan; (2) Muhannad Ismeik: Department of Civil Engineering, Australian College of Kuwait, Safat 13015, Kuwait; (3) Fathi Shaqour: Department of Applied Geology and Environment, The University of Jordan, Amman 11942, Jordan. | ||